Turkey and Zucchini Burgers

Ingredients

• 1 pound ground turkey
• 1 large zucchini, coarsely grated (scant 2 cups)
• 3 green onions, thinly sliced
• 1 large egg
• 2 Tablespoons chopped fresh mint
• 2 Tablespoons chopped cilantro
• 2 cloves garlic, crushed
• 1 teaspoon ground cumin
• 1 teaspoon salt
• 1/2 teaspoon freshly ground pepper
• 1/2 teaspoon cayenne pepper
• 6 1/2 tablespoons sunflower (or canola) oil, for searing
• scant 1/2 cup sour cream
• scant 2/3 cup Greek yogurt
• 1 teaspoon grated lemon zest
• 1 Tablespoon freshly squeezed lemon juice
• 1 small clove garlic, crushed
• 1 1/2 Tablespoons olive oil
• 1 Tablespoon Sumac
• 1/2 teaspoon salt
• 1/4 teaspoon freshly ground black pepper